{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456716469",
    "entityType": "User",
    "nonce": "0x7fbe5f920a43e50bc5e1b2cfc8139487696db0ef6a19948add7161adb2c8f156",
    "signature": "0x74815d5d5fe0f7ceda53934cd00d8c6552f34858e36f256b982f8a1aec63199b4433bb19484d97bf471c841690939014270ace5647a710e9188258f13c367b571c",
    "signer": "0xCedE64dcD8b0FdEDBdADF4b0ba433797eD6301c9",
    "userId": "638733607"
  }
}